I found this idea over on ModdedMustangs.com from Bullitt2445. It came out great. It was tedious, but well worth the time! Order extra, cause you'll screw some of it up!
It's like $23 shipped on ebay for a 12x48 sheet. I bought two. I have less then 1/4 of that left. I ended up having to do the pass. side airbag twice, and that's a big piece. It's well worth the time and effort. At first you think the corners will look bad, but because all these pieces tuck into the everything tightly, everything looks great.
I took all the panels off and made sure to tuck the vinyl around the back so it wouldn't peel. Just take your time and use a lot of heat to get the edges and corners right